Traverser mechanism for coil-winding machines



April 6 1926. 1,580,086

D. MACADIE TRAVERSER MECHANISM FOR COIL WINDING MACHINES- Original FiledJaxi; 16, 192: 2 Sheets-Sheet 1 N X a l NV E NTO R:

Dona h/ Macad/c Bfi/ u flayuW -Mu ATTORNEYS- D. MACADIE TRAVERSERMECHANISM FOR COIL WINDING MACHINES April 6 926.

Original Filed Jan. 16. 192.3 2 Sheets-Sheet 2 my :4 a

wOMMIR T o N fi V 0 M .IflB

' Patented 6, 1926.

' UNITED STATES DONALD KACADIE, OF LONDON, ENGLAND, ASSIGNOR TO THE.AUTOMATIC COIL WIN DER ELECTRICAL EQUIPMENT BRITISH COMPANY- COMPANYLIMITED, 01 LONDON, ENGLAND, A

TBAVERSER mncnamsm FOR corn wmnmo macnmns.

Original application filed 1m 10,.

To all whom it may concern: v Be it known that I, DONALD MAcanIn, subject of George V, King of Great Brltam and Ireland, residing at 109 BowesRoad.

v Palmers Green, London, N. 13, England, have invented new and usefulImprovements in- 'Traverser Mechanism for -Coil-Winding fMachines, ofwhich the following is a specification. This application is a divisionof my co pending application 613,019, filed Jan. 16, 1923. for a coilwinding machine which.automatically stops working when a predeterminedlength of wire corresponding to a given resistance has been wound onthebobbin and in which means are provided to vary the speed ofreciprocation of the traverser arm relatively to the speed ofrotation ofthe bobbin to be wound so that different thickness of wire'can be woundwith their convolutions close together. Theobject of this invention isto provide improved traverser mechanism by means of which the length ofthe layers wound on the. bobbin may be accurately controlledand the saidlayers wound close up to the cheeks of the bobbin. w I

In the drawings,

Figure 1 is a front elevation'of the major part of a coil-windingmachine having embodied therein the improved traverser mechanismaccording to this invention, and

Figure 2 is substantially a plan of the same.

Figure 3 is a transverse section of the coilwinding machine and showsthe mechanism for leading the wire to the bobbin to be wound and forreversing the motion of the traverser arm.

Figure 4 is a front elevation on an enlar ed scale of the mechanism forreciprocatmg the traverser arm, and

Figure 5 is a transverse section of such mechanism. \p

Referring to the drawings and dealing first with the generalconstruction of the machine, a isthe base-plate, b is the motor j thetraverser arm which causes the wire to 1923, Serial No. 613,019. Dividdand this 22, I925. Serial No. 64,142.

application filed October travel along the bobbin while it is being\wound on the latter. I) is a driving disc secured on the motor Spindleand arranged to drive, through the medium of a rubbershod wheel 6, adriven disc or follower d which is fast on the leading-screw d. Thisvariable drive between the motor and the .leadlng-screw forms thesubject matter of my 00- ending application Serial No. 613,- 019. T ebobbin to be wound (not shown) is supported between the chuck b of themotor and the centre 0 of the tail-stock.

- Referring now to the construction of the traverser mechanism, mountedon a rotatable guide rod 70 are two adjustable sliding stops '5? and 7cfirovided with forwardly projectmg arms 8 and k respectively, (therighthand arm k having been omitted in Figure 2 for the sake ofclearness). The downwardly directed .extremitiesof the arms are set inclose engagement with the inner faces of the checks of the bobbin andthe stops k and k are then secured firmly to the guide rod la by meansof clamping nuts k and la. The arms are now turned upwards and backwardsso as to be out of the way of the traverser arm.

Mounted to slide, by means of a sleeve is on a fixed guide rod 70 andalso on the rotatable rod k are two small posts 7: and k and a cam lc inthe form of a double inclined plane. in is a pin which can slidehorizontally in the posts 77 and 70 and is provided with an arm 70 ofwhich the portion 70 is undercut on opposite sides so as wards. The twocams are kept in close,

sliding engagement with one another by means of a tension spring 70connected at its ends to the arm 70 and a stationary pin k respectively.

The cam is which is somewhat stirrupshaped at its lower end, is pivotedon t e pin 7: and also has fixed thereto a double arm 70". I v

The double arm k" is provided at its ends with half-nuts 70 and 70respectively. The

leading-screw is provided with two screwthreads of opposite hand withwhich the two said half-nuts respectively and alternately engage. f

As the leading=screw rotates it 'causesthe half-nut which is inengagement therewith to move along the correspondin thread and at thesame time carries the eeve 70' etc., alon with it. Assuming that theposts k and are caused by the leading-screw to move to the right, thepin is Wlll presently come into engagement with the left-hand end of theetc 70 with the result that the pres-.

" the leading-screw and depressing the other half-nut into engagementwith the leading screw.

The sleeve k" is now caused to move in the opposite direction untilthepin is engages the'right-hand end of the stationary stop k whereuponthe pin 70 and the double-arm c" are causedto return to their formerpositions by reason of the cam Z0 passing back over the cam is. Theseoperations are repeated until the bobbin is fully wound.

By setting the downward extensions of the arms 10 and it hard up to thebobbin cheeks the windings can be brought close up tosuch cheeks. Theinner ends of the stops it and k are provided with adjustable nuts k toallow for easy original adjustment of the machine and to compensate forwear.

The wire is led to the bobbin betweena pair of thin steel plates 70carried by the traverser arm is which, by means of its rearwardlyextending limbs 70 is pivoted on the sleeve is. These limbs can, bymeans of a screw 74, be adjusted to any desired degree of tightnessagainst the shoulder 70 (Figure 4:). The sleeve k is adjusted to workslidingly on the rod k without shake by means of nuts k screwed on toits split ends. The traverser arm rests on a somewhat U-shaped trailer kthe underside of the limbs of which are recessed so that said limbs canrest loosely on and be readily lifted free of the rod 70 The trailer 70has an arm is the underside of the nose of which is provided with a pad7: which rests is caused to trail by reason of the nuts 70 on the 0011.One of the limbs of the trailer is extended rearwardl and is providedwith a counterpoise 72 which can be adjusted inat opposite ends of thesleeve k alternately engaging the limbs of the trailer as the traverserarm reciprocates. When the latter reof the trailer.

verses, the trailer remains stationary until the arm has moved to itsother side, that is, until the nut ls** at the advancing end of thesleeve 70 engages the adjacent limb At this period the trailer alsocommences to reverse. Thus, at all positions of the traverser arm, thepad 70 remains in contact with a substantial number of turns of thelast-wound portion of the bobbin. The pad 70 also serves to preventdental break occur in the wire, and the machine stops.

In order to enable both of the half-nuts to be freed from theleading-screw so as to permit the traverser arm to be moved sidewaysfreely and set to the desired position,

the rearward extremities of the limbs 70 are each provided with aneccentric surface, as shown at k*** in Figure 3. Thus, when thetraverser arm'is swung up into about the vertical position, theeccentric surfaces press on the double arm 1: on opposite sides of thecentre 70 and, as they are made of similar shape or throw, they act inantagonism to the springlc and centralize the cam 70 thereby bringingthe double arm is" to the horizontal position and holding the halffacesof the cheeks of the bobbin to be wound, traverser mechanism and meansin operative engagement with said traverser mechanism adapted to engagethe said slidmg stops to reverse the said traverser mechanism.

2. In a coil winding machine, traverser mechanism characterized by aslidable 'carriage having pivoted thereon the traverser arm and alsohaving pivoted thereonla bracket the upper portion of which is in theform of a double inclined plane constituting a tilting cam and the lowerportion of which has secured thereon a double arm carrying halfnuts atits ends, a screwed shaft,.adapted to be alternately engaged by saidhalf nuts, a pin longitudinally movable in the bracket and carrying adouble inclined plane adapted to co-operate with said cam, a guide rod,two adjustable sliding stops on said guide rod, projecting armson saidsliding stops having downwardly directed extremities adapted to be setin close engagement with the inner faces of the cheeks of the bobbin tobe wound, the arrangement being such that the alternate engagement ofthe ends of the said pin with the said stops causes the double inclinedplane on the said pin to move from one'side to the other of the tiltingcam and thereby cause the double arm. to

75 uncoiling of the winding should an accidis-engage the other half-nutfrom the screwed shaft.

3. In a coil winding machine, traverser mechanism characterized by aslidable carriage having pivoted thereon the traverser arm and alsohaving pivoted thereon a bracket the upper portion of which is in theform of a double inclined plane constituting a tilting cam and the lowerportion of which has secured thereon a double arm carrying half-nuts atits ends, a screwed shaft adapted to be alternately engaged by saidhalf-nuts, a pin longitudinally movable in the bracket and carrying adouble inclined plane adapted to co-operatewith said cam, a'guide rod,two adjustable sliding stops )n said guiderod, projecting arms on saidsliding stops having downwardly directed extremities adapted to be setin close engagement with the inner faces of the cheeks of the bobbin tobe wound, the arrangement being such that the alternate engagement ofthe ends of the said pin with the said stops, causes the double inclinedplane on the said pin tomovefrom one side to the other.

of the tilting cam and thereby cause the double arm to rock so as toengage one half nut with and dis-engage the other half-nut from thescrewed shaft, a trailer combined with said traverser mechanismandhaving a nose adapted to'bear on the wire in process of being woundon the bobbin, and'meane to cause said trailer to lag behind" thetraverser arm. 7 Y

4. In a coil winding machine, traverser mechanism characterized. by aslidable-carriage having pivoted thereon the traverser arm and alsohaving pivoted thereon a bracket the upper portion of which is in theform of a double inclined plane constitutinga tilting cam and the lowerportion of which has secured thereon a double arm-carrying half-nuts atits ends, ascrewed'shaft, adapted to be alternately engaged by saidhalfnuts, a pin longitudinally movable in the bracket and carrying adouble inclined the said stops causes the double inclined 7 plane on thesaid pin to move from one side to the other of the tilting cam andthereby cause the double arm to rock so as to engage one ha'lf-nut withand dis-engage the other half-nut from the screwed shaft, and camsurfaces on said traverser arm which can be brought. into engagementwith the double arm for the purpose of freeing the halfnuts from thescrewed shaft.

5. In a coil. winding machine, traverser mechanismcharacterized by aslidable carriage having pivoted thereon the traverser arm and alsohaving pivoted thereon a bracket the upper portion of which is in theform of a double inclined plane constituting a tilting cam and the loweror-tion of which has secured thereon a dou le arm carrying half-nuts atits ends, a'screwed shaft adapted to be alternately engaged. by saidhalf-nuts, a pin longitudinally movab e in the bracket and carrying adouble inclined plane adaptdownwardly Y directed extremities 7 adaptedto be set in close engagement with p the inner faces of the checks ofthebobbin to be wound, the arrangement being such that the alternateengagement of the ends of the said in with the said stops causes thedouble inclined plane on the said pin to move from one slde to the otherof the tilt-' ing cam and thereby cause the double arm to rock so as toengage one half-nut with and vdis-engage the other half-nut from thescrewed shaft, a trailer combined with said traverser mechanism andhaving a nose adapted to bear on the wlre in process of being wound onthe bobbin, means to cause said trailer to lag behind the traverser arm,and cam surfaces on said traverser arm which can be brought intoengagement with plane adapted to co-operate with sa-id the double armfor the purpose of freeing cam, a gulde rod, two adjustable slidthehalf-nuts from the screwed shaft.

ing sto s on said guide rod, projecting arms on em p I directedextremities adapted to be set in close sliding stops having downwardlyIntestimony whereof I have signed my name to this specification.

DONALD MACADIE.

